Rocker arm



FIG. 1 is a first perspective view of a rocker arm showing the new design.

FIG. 2 is a second perspective view of the rocker arm of FIG. 1.

FIG. 3 is a top view of the rocker arm of FIG. 1.

FIG. 4 is a bottom view of the rocker arm of FIG. 1.

FIG. 5 is a first side view of the rocker arm of FIG. 1.

FIG. 6 is a second side view of the rocker arm of FIG. 1.

FIG. 7 is a first end view of the rocker arm of FIG. 1; and,

FIG. 8 is a second end view of the rocker arm of FIG. 1.

The broken line showing portions of the rocker arm form no part of the claimed design. 

CLAIM The ornamental design for a rocker arm, as shown and described. 